原始碼基於api26
@override
public final void schedulelaunchactivity(intent intent, ibinder token, int ident,
activityinfo info, configuration curconfig, configuration overrideconfig,
compatibilityinfo compatinfo, string referrer, ivoiceinteractor voiceinteractor,
int procstate, bundle state, persistablebundle persistentstate,
listpendingresults, listpendingnewintents,
boolean notresumed, boolean isforward, profilerinfo profilerinfo) 複製**
public void handlemessage(message msg) break;複製**private void handlelaunchactivity(activityclientrecord r, intent customintent, string reason)
// 確保執行最新的配置
handleconfigurationchanged(null, null);
if (locallo**) slog.v(
tag, "handling launch of " + r);
// 建立activity之前初始化windowmanagerglobal,獲取iwindowmanger
windowmanagerglobal.initialize();
//啟動activity
activity a = performlaunchactivity(r, customintent);
//activity不為null
if (a != null)
}} else catch (remoteexception ex)
}}複製**
private activity performlaunchactivity(activityclientrecord r, intent customintent)
//component檢驗
componentname component = r.intent.getcomponent();
if (component == null)
//原activity不為空可新建component
if (r.activityinfo.targetactivity != null)
//建立contextimpl
activity activity = null;
try
} catch (exception e)
}try
if (debug_configuration) slog.v(tag, "launching activity "
+ r.activityinfo.name + " with config " + config);
window window = null;
if (r.mpendingremovewindow != null && r.mpreservewindow)
//context表示為activity
//準備好了嗎我們的activity來了
r.embeddedid, r.lastnonconfigurationinstances, config,
r.referrer, r.voiceinteractor, window, r.configcallback);
if (customintent != null)
r.lastnonconfigurationinstances = null;
checkandblockfornetworkaccess();
activity.mstartedactivity = false;
int theme = r.activityinfo.getthemeresource();
//設定主題
if (theme != 0)
activity.mcalled = false;
//activity已啟動執行oncreate()了
if (r.ispersistable()) else
if (!activity.mcalled)
r.activity = activity;
r.stopped = true;
//沒有關閉就要執行onstart()了
if (!r.activity.mfinished)
if (!r.activity.mfinished)
} else
if (r.state != null)
}//沒有finish()執行onpostcreate()
if (!r.activity.mfinished) else
if (!activity.mcalled) }}
r.paused = true;
mactivities.put(r.token, r);
} catch (supernotcalledexception e) catch (exception e)
}return activity;
}複製**
再看看attach()
//主要是給我們activity賦一大堆值
final void attach(context context, activitythread athread,
instrumentation instr, ibinder token, int ident,
charsequence title, activity parent, string id,
nonconfigurationinstances lastnonconfigurationinstances,
configuration config, string referrer, ivoiceinteractor voiceinteractor,
window window, activityconfigcallback activityconfigcallback)
if (info.uioptions != 0)
//看見沒這就是uithread
muithread = thread.currentthread();
//主線程為activitythread
mmainthread = athread;
//原來這貨再這賦值的每乙個activity都有這個監控類
minstrumentation = instr;
mtoken = token;
mident = ident;
mintent = intent;
mreferrer = referrer;
mcomponent = intent.getcomponent();
mactivityinfo = info;
mtitle = title;
mparent = parent;
membeddedid = id;
mlastnonconfigurationinstances = lastnonconfigurationinstances;
if (voiceinteractor != null) else
}mwindow.setwindowmanager(
(windowmanager)context.getsystemservice(context.window_service),
mtoken, mcomponent.flattentostring(),
(info.flags & activityinfo.flag_hardware_accelerated) != 0);
if (mparent != null)
mwindowmanager = mwindow.getwindowmanager();
mcurrentconfig = config;
mwindow.setcolormode(info.colormode);
}複製**
schedulelaunchactivity()、handlelaunchactivity()、performlaunchactivity()
將activity的相關資訊淋漓盡致的展現，沒事多看看，我還沒專研細緻的方法呢。
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